Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21H - Pulp compositions; Preparation thereof not covered by subclasses ,; Impregnating or coating of paper; Treatment of finished paper not covered by class or subclass; Paper not otherwise provided for › D21H 21 - Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
Patents for D21H 21 - Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties (20,755)
10/1991
10/23/1991EP0453406A1 5,5-Bis(perfluoroalkylheteromethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinanes, derived acyclic phosphorus acids and salts or esters thereof
10/23/1991EP0453131A2 Security paper and method of manufacturing same
10/23/1991EP0452522A2 Method for applying a water repellant composition with a water carrier
10/23/1991CN1055567A Treatment of fabrics
10/18/1991CA2019325A1 Flame retardant compositions
10/17/1991DE4109193A1 Paper coating compsn. fluorescent whitening agent - which is di:sodium bis:di:anilino-triazinyl-amino stilbene di:sulphonate
10/16/1991EP0451842A1 Pretreatment of filler with cationic ketene dimer
10/16/1991EP0451665A1 Treatment of fabrics
10/16/1991EP0451664A1 Treatment of fabrics
10/16/1991EP0451663A1 Treatment of fabrics
10/16/1991EP0297125A4 Pattern forming saturator and impregnating method
10/16/1991CN1014333B Filler compositions and their use in manfacturing fibrous sheet materials
10/15/1991US5057268 Method and composition of matter for detecting large quantities of paper currency
10/15/1991CA1290508C Production of paper and paperboard of high dry strength
10/13/1991CA2040298A1 Security paper and method of manufacturing same
10/13/1991CA2039634A1 Treatment of fabrics
10/13/1991CA2039632A1 Treatment of fabrics
10/13/1991CA2039624A1 Treatment of fabrics
10/12/1991CA2040089A1 Pre-treatment of filler with cationic ketene dimer
10/09/1991EP0451092A2 Concentrated dyestuff solutions
10/08/1991US5055160 Security paper with rigid segments
10/08/1991CA1290289C Package
10/08/1991CA1290108C Process for the production of paper
10/03/1991WO1991014822A1 A process using cellulase for improving drainage properties of pulp
10/02/1991EP0449250A1 Trisazo compounds and use thereof
10/01/1991CA1289946C Azo dyes
09/1991
09/25/1991CN1054808A Anti-imitation paper and manufacturing method thereof
09/24/1991US5051504 Dyes for coloring paper
09/24/1991US5051150 Stabilized synthetic pulp-cellulose blends
09/24/1991CA1289399C Method for the manufacture of coloured egg packages, apparatus for carrying such a method into effect and egg packages manufactured by this method
09/24/1991CA1289307C Reinforced polymer sheet
09/24/1991CA1289306C Method for stabilizing the brightness of bleached lignin containing cellulose pulp
09/19/1991WO1991013941A1 Water-insoluble azo dyes, their manufacture and use
09/18/1991EP0447094A1 Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof
09/17/1991US5049238 Naphthol dyes
09/17/1991CA1288907C Pitch control aid
09/12/1991DE4007535A1 Wasserunloesliche azofarbmittel, ihre herstellung und verwendung Water-insoluble azo colorants, their production and use
09/12/1991DE4007060A1 Intumescent sheet useful in construction and as moulding material - is made from fibres and expandable graphite by paper process without binder
09/11/1991EP0445953A1 Cationic polymer-modified filler material, process for its preparation and method for its use in papermaking
09/10/1991US5047517 Laked pyrazolone azo pigment, process for its preparation and its use
09/03/1991US5045426 Toner adhesion-enhancing coating for security documents
09/03/1991US5045104 Bactericides, algicides, fungicides
08/1991
08/27/1991US5043370 Polyalkylene imide of high brightness and retention characteristics and low toxicity and method of increasing paper whiteness
08/21/1991EP0442746A1 Calcined kaolin clay filler pigment for paper
08/21/1991EP0442185A1 Absorbent composite and method for production thereof
08/20/1991CA1287945C Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper
08/15/1991CA2035117A1 Calcined kaolin clay filler pigment for enhancing opacity and printing properties of newsprint and mechanical papers
08/13/1991CA1287572C Antimicrobial composition containing isothiazolone
08/10/1991WO1991012372A1 Sheet for protected documents having high printability and high handling resistance
08/07/1991EP0440554A1 Document authenticable by an authentication composition and process to realize said authentication
08/07/1991CN2082281U Electrothermal mosquitocide paper sheet
08/06/1991US5037863 Polymerizing unsaturated monomers in a mixture of water, oil and surfactant to form an inverse or microemulsion and functionalizing
08/06/1991US5037702 Smooth coating of cured lacquer on film substrate is markable with dry wipe inks; nondeforming
08/06/1991US5037508 Aluminum chlorohydrate or hydrotalcite treated kaolin clays for pitch control
07/1991
07/31/1991EP0439363A1 Treated papers
07/31/1991EP0438755A1 Paper and board-paper making process from paper materials containing perturbating compounds
07/30/1991US5035772 Chemically and blocking phenolic hydroxyl groups
07/25/1991WO1991009067A3 Dispersion and/or grinding agent for aqueous mineral suspensions with a zeta potential close to zero, aqueous suspensions containing same, and applications
07/24/1991EP0438385A1 Procedure and additive for preventing clogging of a handling process of dry cellulose-containing material
07/24/1991EP0438380A1 Polymerized quaternary diallylammonium compounds
07/24/1991EP0437816A1 Superabsorbent wet-lay nonwoven product
07/24/1991EP0437764A1 Stable aqueous emulsions of alkyl-keten dimer
07/23/1991WO1991010777A1 Process for sizing paper and similar products
07/23/1991WO1991010776A1 Reducing foaming in paper manufacture
07/23/1991US5034017 Lightfast, washfast blue color for paper
07/23/1991CA2074085A1 Process for sizing paper and similar products
07/23/1991CA2074066A1 Reducing foaming in paper manufacture
07/23/1991CA1286464C Non-woven fibre product
07/19/1991CA2034355A1 Stabilized aqueous alkyldiketene emulsions
07/17/1991EP0436649A1 Base composition for the fabrication of a flexible and porous sheet product consisting basically of elastomer powder, sheet product and preparation method.
07/17/1991CA2033365A1 Superabsorbent wet-lay nonwoven product
07/16/1991US5032227 Production of paper or paperboard
07/16/1991US5032226 Base paper for photographic layer support
07/16/1991CA1286061C High bulk calendered paper containing vesiculated beads
07/13/1991CA2034070A1 Procedure and additive for preventing clogging of a handling process
07/09/1991US5030833 Method and device for detecting objects containing fluorescent substances
07/09/1991US5030678 Cationic surface sizing emulsion
07/09/1991US5030284 Binders
07/09/1991CA1285713C Filler compositions and their use in manufacturing fibrous sheet materials
07/03/1991CN1052715A Woman health bath paper towel
06/1991
06/27/1991DE3942466A1 Soluble crosslinkable poly:amine(s) for finishing of paper - by reaction of isocyanate-sulphonate(s) with poly:amine(s) contg. prim. and/or sec. amino Gps.
06/26/1991EP0434623A1 Cationic azo dyes
06/26/1991EP0434388A2 Emulsion polymerisation
06/26/1991EP0434387A2 Emulsion polymerisation
06/25/1991US5026831 Water-insoluble disazo colorants having hetero-bicyclic methylene-active compounds as coupling component
06/25/1991US5026723 Water treatment, papermaking
06/25/1991US5026507 Fluorescent whitening agents, products comprising the agent and method of use thereof
06/23/1991CA2032750A1 Emulsion polymerisation
06/23/1991CA2032749A1 Emulsion polymerisation
06/21/1991WO1991009067A2 Dispersion and/or grinding agent for aqueous mineral suspensions with a zeta potential close to zero, aqueous suspensions containing same, and applications
06/21/1991CA2070636A1 Dispersing and/or grinding agent for mineral aqueous suspensions with a zeta potential near zero; aqueous suspensions containing said agent and their uses
06/19/1991EP0363471A4 Dyed mineral pigments and applications
06/18/1991US5025046 Creping adhesive composition
06/18/1991US5024898 Erasably markable articles and methods of making such articles
06/18/1991CA1284933C Testing polyelectrolytes
06/13/1991WO1991008235A1 Production of stable polymer dispersions using amphoteric polymers as stabilizers
06/11/1991US5023324 Lightfastness, water fastness
06/08/1991WO1991009174A1 Wet strength resin composition and method of making same
06/08/1991CA2070837A1 Wet strength resin composition and method of making same
06/05/1991EP0430810A1 Security base-sheet comprising an element collecting radiation and conducting by reflection an induced radiation at one end of said element
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